It has been seen that people get attracted towards things which they can't see or have proof of...THE UNSEEN TRUTHS... It is human nature to know about things which are not acheivable...SO...DO GHOSTS REALLY EXIST?? IF YES...THEN WHAT ARE THEY? HOW ARE THEY? ARE THEY ALWAYS EVIL? Questions like these have always arised...and even answered...but differently by different people! there may be a layman's outlook,a scientific outlook or a religious outlook...so its on you to decide..